Vehicle-tire filler.



UNITED STATES Patented April 19, 1904.

PATENT OFFICE.

VEHICLE-TIRE FILLER.

SPECIFICATION forming part of Letters Patent No. 757,631, dated April19, 1904.

Application filed August 10, 1903. Serial No. 169,025.

To all whom it may concern:

Be it known that I, CLARENCE D. NIRDLIN- GER, a citizen of the UnitedStates, residing at St. Louis,State of Missouri, have invented certainnew and useful Improvements in Vehicle-- Tire Fillers, of which thefollowing is a specification.

This invention relates to a novel composition of matter adapted to serveas a filling for a tire having an exterior sheathing, the object beingto provide a tire having the advantages of an ordinary pneumatic tirewhich'shall be free from the disadvantages incident to articles of thatsort.

I produce a tirewhich has an exterior tube, preferably of rubber, and aninterior chamber initially empty, but which when the tire is completedis filled with a yielding elastic filler of such nature and introducedin such way that the filling mass and the exteriortube becomepractically incorporated one with the other and inseparable one from theother.

The ingredients which I use to form a mass of the filling material areglucose, glue, glycerin, tannin, formaldehyde, and'water. The ultimatelyresulting mass containsthese in sub: stantially the followingproportionsto wit, one-third of a pound of glucose, one-fourth of apound of glue, somewhat less than one-half say five-twelfths-of a poundof glycerin, one-fortieth of an ounce of tannin, one-fifteenth of anounce of formaldehyde, and onethird of an ounce of water. In ten poundsof the compound are put approximately one ounce of chrome-alum. I do notmean that exactly these relative proportions are essential to theinvention, for there can be more or less modification in thatrespectwithout departing from the characteristic features, nor do I mean thatall-of these substances are brought together at once, for, as it will beseen A mass of liquid glue is provided by mixing one pound of hard gluewith one pound of water in such quantities as are desirable, the mix--rubber sheath.

(No specimens.)

' ture preferably being allowed to rest for half 5 a day. A mass ofglycerin is placed in a tank and heated for about half an hour, and thenglue, such as above provided, is added in the proportion herein setforth of a quarter of a pound of glue to five-twelfths of a pound of 5 5glycerin, and after they are brought together they are slowly stirredfor half an hour. Glucose in a liquid state is then added, aboutonethird of a pound to a quarter of a pound of the glue, and thismixture is slowly stirred for a brief period of a few minutes. Thentannin is introduced in approximately the proportions indicated and thestirring is continued for a further short period. A solution offormaldehyde and water (one part of the former 5 and'five of the latter).is then added to the mixture,'- after which the stirring action iscontinued for a sufiicient timesay'onc hour and, as aforesaid, bypreference, I combine with the above compound a quantity of 7chrome-alum, approximately one ounce to ten pounds ofthe compound. Theaction of the formaldehyde in the composition itself is not onlyantiseptic, but leather-forming.-

The rubber sheathing or tube of. the tire should first be rinsed orflushed with a solution of formaldehyde, this preventing the starting offermentation in any of the ingredients of the filler, theformaldehyde'actiug here in relation to the rubber sheathing, as it doesin the filling mixture, as a destroyer of the germs or the like whichcause fermentation and insures that the filling mass shall becomethoroughly incorporated with the interior part of the rubber and thatthe union of 5 the two bodies shall remain firm, so that there Will notoccur that result which has made tirefillers of earlier sortsinoperativenamely, the loosening and separating of the filler from theWhat I claim is 1. The herein-described composition of matter as afiller for tireshaving mixed together glue, glycerin, saccharine matterand formaldehyde in substantially the proportions and manner set forth.

Q. The herein-described composition of matter as a filler forvehicle-tires having mixed I 0 ter as a filler for vehicle-tires, havingmixed together glue, glucose, glycerin, saccharine matter, formaldehyde,and chrome-alum in substantially the proportions and manner set forth,

In testimony whereof I aflix my signature in I 5 presence of twoWitnesses.

CLARENCE D. NIRDLINGER. \Vitnesses:

W. R. MORGAN, A. Gr. HARDING.-

